Fantastic video!!! Looking forward to Episode 5!!! Also might I suggest a switch from the gear 360 to a insta 360 x3 as the quality is very good and the dimensions are ideal for a drop cam. 😊
Would you be better off with a thread on dome(like a jar) or a flange with a retainer as the screws may create uneven stresses in the dome, and are visible in the frame of the video?
Have you put conformal coating on your electronics? Since your design is open to sea air before diving, the pressure and temperature on the external hull as it goes down will cause condensation to form, that could affect sensitive electronics. SMD LEDs are the most susceptible to moisture, with high requirements for temperature control during production runs, or else they short out. Even with the fan inside, the humidity has nowhere to go, but to be absorbed.
So far, we've been using some silica beads to absorb the moisture in the air, and when coupled with the fan circulating the air, this seems to work pretty well. It's especially a concern for fogging up the viewing domes. Conformal coating is definitely a good idea for the next PCB!
Great project, love following the progress! Two questions: Are there any o-rings between the domes and metal, or is the contact surface between them enough to stop water ingress? Also, do you make the salt ring releases yourself?
Thanks! Yes, there are face O-rings running along the surface where the dome and main enclosure meet. These should be enough to keep the water out. Additionally, at some point, as the pressure increases, the domes will get pushed against the metal hard so hard that the contact between them should provide a sufficiently watertight seal, just due to the immense clamping force. The salt releases are actually just "hamster licking wheels", available on amazon for pets!
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Nice work, Ivan!!!! We love following your trials and tribulations 🤩
“Exactly 30 minutes… Pretty spot on with the 20 minute estimate” - @NASA hire this man
Fantastic video!!! Looking forward to Episode 5!!! Also might I suggest a switch from the gear 360 to a insta 360 x3 as the quality is very good and the dimensions are ideal for a drop cam. 😊
We're definitely thinking of switching to another camera as these are proving pretty problematic, thanks for the suggestion!
@@Vosentech they are pretty small and don’t get too hot :)
After machining plastics we anneal the parts to relieve stress in the plastic.
thanks, will take a look into that, so far we've just been using them raw as they come out from machining, only vapor polishing them.
Would you be better off with a thread on dome(like a jar) or a flange with a retainer as the screws may create uneven stresses in the dome, and are visible in the frame of the video?
Yes, we'll likely switch to a flange type retainer, and leave the dome without screw holes in the next iteration, when we go deeper.
Have you put conformal coating on your electronics? Since your design is open to sea air before diving, the pressure and temperature on the external hull as it goes down will cause condensation to form, that could affect sensitive electronics. SMD LEDs are the most susceptible to moisture, with high requirements for temperature control during production runs, or else they short out. Even with the fan inside, the humidity has nowhere to go, but to be absorbed.
So far, we've been using some silica beads to absorb the moisture in the air, and when coupled with the fan circulating the air, this seems to work pretty well. It's especially a concern for fogging up the viewing domes. Conformal coating is definitely a good idea for the next PCB!
Great project, love following the progress! Two questions: Are there any o-rings between the domes and metal, or is the contact surface between them enough to stop water ingress? Also, do you make the salt ring releases yourself?
Thanks! Yes, there are face O-rings running along the surface where the dome and main enclosure meet. These should be enough to keep the water out. Additionally, at some point, as the pressure increases, the domes will get pushed against the metal hard so hard that the contact between them should provide a sufficiently watertight seal, just due to the immense clamping force. The salt releases are actually just "hamster licking wheels", available on amazon for pets!